X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/f8be5ef4cb86bee9227b14b41238ac867c820759..692da0b555f68e295bb588ab3a02c2354c2daba0:/configure.in

diff --git a/configure.in b/configure.in
index dc8cc7f4..bb28f5da 100644
--- a/configure.in
+++ b/configure.in
@@ -2,6 +2,9 @@ dnl Process this file with autoconf to produce a configure script.
 AC_INIT(byteorder.h)
 AC_CONFIG_HEADER(config.h)
 
+AC_CANONICAL_SYSTEM
+AC_VALIDATE_CACHE_SYSTEM_TYPE
+
 dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -124,5 +127,30 @@ if test "$ac_cv_lib_socket_connect" = "yes" ||
   AC_DEFINE(HAVE_CONNECT)
 fi])
 
+#
+# The following test was mostly taken from the tcl/tk plus patches
+#
+echo $ac_n "checking whether -c -o works ... $ac_c"
+rm -rf conftest*
+cat > conftest.$ac_ext <<EOF
+int main() { return 0; }
+EOF
+${CC-cc} -c -o conftest..o conftest.$ac_ext
+if test -f conftest..o; then
+    OBJ_SAVE="#"
+    OBJ_RESTORE="#"
+    CC_SHOBJ_FLAG='-o $@'
+    echo yes
+else
+    OBJ_SAVE='	@b=`basename $@ .o`;rm -f $$b.o.sav;if test -f $$b.o; then mv $$b.o $$b.o.sav;fi;'
+    OBJ_RESTORE='	@b=`basename $@ .o`;if test "$$b.o" != "$@"; then mv $$b.o $@; if test -f $$b.o.sav; then mv $$b.o.sav $$b.o; fi; fi'
+    CC_SHOBJ_FLAG=""
+    echo no
+fi
+rm -rf conftest*
+AC_SUBST(OBJ_SAVE)
+AC_SUBST(OBJ_RESTORE)
+AC_SUBST(CC_SHOBJ_FLAG)
+
 
 AC_OUTPUT(Makefile lib/dummy zlib/dummy)